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Re: [lwip-users] Handle a broadcast storm

From: address@hidden
Subject: Re: [lwip-users] Handle a broadcast storm
Date: Fri, 22 Mar 2019 08:02:20 -0700 (MST)

Thank you very much for your analysis, I was not able to do that by myself! I
confirm that in the embedded device, even if I have set 3 rx buffer, there
is a while loop going through the rx buffer and it seems they are loaded
while I'm reading them so I'm reaching up to 400 while cicles in ethernet
I don't think it's possible to block them at HW level acting on MAC filters:
if it's not possible the workaround you propose can help but doesn't solve
my issue because a frame process takes about 20us in my HW with 8-9 for pool
buffer allocation so even if I filter out the pool part and I avoid to call
LWIP I can still have 11us*400 that is a lot of time.
Thanks again for your analysis, I will have a look at the STM32, and I will
post my proposed solution.

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